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jwt-heartbreaker is a free penetration testing tool. Burp Suite Professional is a commercial penetration testing tool by PortSwigger Ltd.. Compare features, ratings, integrations, and community reviews side by side to find the best penetration testing fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, company size fit, deployment model, here is our conclusion:
Penetration testers and AppSec engineers who routinely audit REST APIs will find jwt-heartbreaker indispensable for JWT validation testing inside Burp; it automates the tedious checks for unsigned tokens, weak secrets, and algorithm confusion that manual review misses. The 135 GitHub stars and active maintenance show real adoption among practitioners who integrate it into their standard Burp workflows rather than reaching for heavier, closed-source alternatives. Skip this if your threat model doesn't involve JWT-authenticated APIs or if you need post-exploitation JWT manipulation; jwt-heartbreaker focuses narrowly on the discovery and validation phase.
Security teams responsible for web application penetration testing will get the most from Burp Suite Professional because its manual testing workflow is genuinely faster than competitors when you need to find logic flaws and authentication bypasses that automated scanners miss. The platform covers ID.RA and PR.PS functions across both on-premises and cloud deployments, and PortSwigger's 299-person team maintains the strongest passive scanning library in the category. Skip this if your team lacks dedicated web security engineers or if you need a tool that also handles API fuzzing and mobile testing equally well; Burp's mobile support lags, and the learning curve punishes casual users.
A Burp extension to check JWT tokens for potential weaknesses
A web application security testing platform that combines manual and automated testing tools for conducting comprehensive security assessments and penetration testing.
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Common questions about comparing jwt-heartbreaker vs Burp Suite Professional for your penetration testing needs.
jwt-heartbreaker: A Burp extension to check JWT tokens for potential weaknesses..
Burp Suite Professional: A web application security testing platform that combines manual and automated testing tools for conducting comprehensive security assessments and penetration testing. built by PortSwigger Ltd.. headquartered in United Kingdom..
Both serve the Penetration Testing market but differ in approach, feature depth, and target audience.
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